Streams
Detailed overview of regional geography, mountain landscapes, and protected area extent
Rio Grande National Forest Geographic Profile: Mapped Boundaries and Terrain Features
Examine the physical composition of Rio Grande National Forest through its recorded boundary extents and regional landscape context. This profile highlights mountain terrain, riverine environments, and major natural features located within the designated protected area in Colorado.

A vast Colorado forest where the Rio Grande begins and the Continental Divide stretches along its western edge.
Rio Grande National Forest
Rio Grande National Forest is a large U.S. national forest covering 1.86 million acres in southwestern Colorado. It sits within and around the San Luis Valley, which is widely recognized as the world's largest agricultural alpine valley and one of the world's largest high deserts framed by mountains. The forest is defined by its dramatic geography: the headwaters of the Rio Grande rise within its boundaries, and the Continental Divide of the Americas runs along most of its western border. This combination of high valley, surrounding peaks, and major divide gives the forest an unusually varied terrain of alpine meadows, forested slopes, and arid basin edges. Spanning parts of nine Colorado counties, Rio Grande National Forest contains several designated wilderness areas and offers some of the state's most extensive backcountry landscapes. It serves as both a critical watershed and a defining natural feature of the southern Rockies.
- Location
- United States of America
- Park type
- Protected landscape
- Established
- 1908
- Area
- 7,500 km²
Recorded country and regional administrative status in the United States
Rio Grande National Forest Geographic Context and Regional Location
- Countries
- United States of America
- Regions
- Colorado
- Primary location
- Colorado
- Geographic setting
- Inland
Interactive boundary geometry and derived spatial measurements
Rio Grande National Forest Boundary Map and Spatial Extent
- Boundary area
- 7,848.6 km²
- Boundary perimeter
- 1,249.7 km
- Northernmost point
- 38.4582° N
- Southernmost point
- 36.9938° N
- Easternmost point
- 105.4765° W
- Westernmost point
- 107.5593° W
- Geographic centre
- 37.726° N, 106.6122° W
- North–south span
- 162.5 km
- East–west span
- 183.6 km
Mapped mountain classifications and recorded natural features
Rio Grande National Forest Terrain And Named Natural Features
Selected named natural features
Streams
Shearing Creek
Streams
East Fork Alder Creek
Streams
Slaughterhouse Creek
Streams
Rito Hondo Creek
Peaks
Kit Carson Mountain
4,319 m
Boreal climate zones, mountain relief, and riverine habitats across the protected terrain
Rio Grande National Forest Environmental Setting and Landscape Classifications
- Relief
- Mountain
- Climate
- Boreal
- Water
- Major water bodies
- Forest cover
- Partial forest
- Seasonality
- Year-round
Landscape features
Mountains · Valleys · Forest · Rivers
Habitat types
Alpine meadow · Montane forest · Riverine habitat
Compare regional geography, alpine terrain, and neighboring Colorado reserves
Explore Parks Near Rio Grande National Forest and Protected Landscapes

North
La Garita Wilderness: Exploring the High Alpine Geography of Southern Colorado
Volcanic terrain and protected mountain wilderness atlas
La Garita Wilderness serves as a primary example of protected high-alpine geography in southern Colorado. This atlas entry examines the undulating volcanic ridges, glacial cirques, and alpine basins that define the area, including the prominent peak of San Luis. It highlights the integration of significant trail systems within this protected landscape, offering a clear perspective on the physical geography and conservation value of the La Garita mountain range.
- Area
- 524.58 km²
- Established
- 1964
- IUCN
- Ib
- Relief
- Mountain

East
San Isabel National Forest: Geographic Overview and Protected Mountain Landscape Atlas
Central Colorado alpine terrain and designated wilderness areas
Spanning eleven counties in central Colorado, San Isabel National Forest serves as a cornerstone of the Southern Rocky Mountains. The forest landscape is dominated by the Sawatch and Sangre de Cristo ranges, offering a unique atlas of alpine tundra, dense coniferous forests, and high-altitude peaks that define the character of the region. This protected area provides a vital habitat and a vast, rugged environment characterized by volcanic formations like the Spanish Peaks and glacial geological features.
- Area
- 4,533.42 km²
- Established
- 1902
- Relief
- Mountain
- Climate
- Alpine
West
San Juan National Forest: Geographic Overview of a Major Southern Colorado Protected Landscape
Mapped terrain across the Southern San Juan Mountains
San Juan National Forest represents a massive protected landscape in western Colorado, defined by its rugged alpine peaks, dense conifer forests, and glacial valleys. This atlas entry details the forest boundary, its position along the Continental Divide, and the surrounding transition into the Colorado Plateau. It provides a structured look at the terrain that connects diverse ecosystems, from high-altitude tundra to expansive mesa country, within one of the largest national forests in the American West.
- Area
- 7,603.42 km²
- Established
- 1905
- Relief
- Mountain
- Climate
- Alpine
East
Great Sand Dunes National Park and Preserve: Colorado's Unique Mapped Landscape
Explore the natural terrain and protected boundaries.
Great Sand Dunes National Park and Preserve offers a unique protected landscape within Colorado, characterized by its distinct natural terrain and extensive dune fields. This destination provides valuable context for atlas exploration, detailing the park's mapped boundaries and its specific geographic setting. Understand its significance as a protected area and appreciate the unique natural features that define its landscape for a richer geographic discovery.
- Area
- 603.1 km²
- Established
- 2004
- IUCN
- V
- Visitors
- 432.5K annual

Northwest
Powderhorn Wilderness: A High-Elevation Protected Landscape in the San Juan Mountains
Basaltic plateaus and vast alpine tundra in Colorado
Powderhorn Wilderness protects a distinct highland environment in southwestern Colorado. Characterized by dark basaltic caprocks and deep glacial cirques, this area serves as a critical headwaters system for the Gunnison River, supporting a complex transition from sagebrush steppe to subalpine forest and wind-swept tundra. The geography remains largely defined by its volcanic heritage and the primitive character of its remote plateau summits.
- Area
- 251.1 km²
- Established
- 1993
- IUCN
- Ib
- Relief
- Mountain

West
Uncompahgre National Forest: Protected Landscapes and Geographic Features in Colorado
Mapping the arid plateau and high-country San Juan wilderness zones.
Uncompahgre National Forest represents a vast protected area in the American West, spanning iconic landscapes from the dry, pinyon-juniper covered Uncompahgre Plateau to the dramatic, jagged ridges of the northern San Juan Mountains. This atlas entry provides essential context on its alpine wilderness designations, high-country topography, and the unique geological transitions that define its status as a critical Colorado resource for regional landscape analysis.
- Area
- 3,865.68 km²
- Established
- 1905
- Relief
- Mountain
- Climate
- Alpine

West
Mount Sneffels Wilderness: Mapping the High Alpine Terrain of the San Juan Mountains
Protected mountain geography in southwestern Colorado
Mount Sneffels Wilderness protects a dramatic cluster of peaks in the San Juan range, characterized by glacial cirques, expansive talus fields, and sharp ridgelines. As a vital component of the Colorado backcountry, this area provides a window into high-altitude ecological transition zones, from dense conifer forests to exposed granite summits that define the character of the Uncompahgre National Forest.
- Area
- 67.04 km²
- Established
- 1980
- IUCN
- Ib
- Relief
- Mountain
West
Lizard Head Wilderness: Mapping the San Juan Mountains Protected Alpine Terrain
High elevation geography and volcanic wilderness in Colorado
Lizard Head Wilderness is a federally protected area in southwestern Colorado characterized by steep ridgelines, dramatic volcanic geology, and alpine basins. It protects a rugged mountain landscape featuring the iconic Lizard Head spire and a cluster of high-elevation peaks including Mount Wilson, El Diente Peak, and Wilson Peak. The area offers a significant study in remote high-mountain geography and watershed protection within the San Juan range.
- Area
- 167.17 km²
- Established
- 1980
- IUCN
- Ib
- Relief
- Mountain
Continue Exploring the Protected Landscapes of Rio Grande National Forest
Examine the detailed geographic context and mapped boundaries of Rio Grande National Forest within the MoriAtlas ecosystem. Discover how this massive protected area integrates the alpine environment of the Continental Divide with the arid basin of the San Luis Valley.
